Mettke-Hofmann, Claudia Verhaltensphysiologie, Seewiesen, Max Planck Institut für Ornithologie, Max Planck Society;
Mettke-Hofmann, C. (2000). Changes in exploration from courtship to the breeding state in red-rumped parrots (Psephotus haematonotus). Behavioural Processes, 49(3), 139-148. doi:10.1016/s0376-6357(00)00084-x.